The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2002
Filed:
Jul. 05, 2000
Applicant:
Inventors:
Chaojiu Wang, Tochigi, JP;
Akihiko Serizawa, Tochigi, JP;
Assignee:
Showa Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 9/10 ;
U.S. Cl.
CPC ...
F15B 9/10 ;
Abstract
In a control valve of a power steering apparatus, mutually adjacent longitudinal grooves are formed at an inner surface of a sleeve, and each upper end of longitudinal grooves is arranged in a stagger layout, and each lower end thereof is arranged in a stagger layout.